Boiler-flue cleaner.



J. WIEGHMANN.

BOILER FLUE CLEANER.

APPLICATION FILED NOV27.1907.

932,209. Patentd Aug. 24, 1909.

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Jenn WIECHMANfi, or ALBANY, new roan.

BOILER-FLUE CLEANER.

Specification of Letters Patent.

Application filed November 27, 1907. Serial No. 4%,062.

T 0 all whom it may concern:

Be it known that l, JOHN /VIEQH'MANN, a citizen of the United States, and a resident of Albany, in the county of Albany and State of New York, have invented a new and Im roved Boiler-Flue Cleaner, of which the fol owing is a. full, clear, and exact description.

The object of the invention is to provide a new and improved boiler flue cleaner, arranged to insure a thoroughremoval of scale, and to provide the desired flexibility for the cleaner to readily pass through bent or curved tubes, fines or pipes.

The invention consists of novel features and parts and combinations of the same, ,which will be more fully described herein after and then pointed out in the claims.

A practical embodiment of'the invention.

is represented in the accompanying drawings forming a art of this specification, in which similar ciaracters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement, parts being broken out; Fig. 2 is a longitudinal central section of the same; Fig. 3 is an enlarged rear end view of the revoluble cutter head; Fig. 4 is a longitudinal section of the same on the line 4-4 of Fig. 3,-

and Fig. 5 is a transverse section of the initial cutter on the line 5+5 of Fig, 2'.

The cutter-head A of the boiler flue cleaner is rotated by a turbine B of any approved construction, preferably,however, such as shown and", descrihed in the application for Letters Patent of the United States, No. 376,866,1"1ledhy me Q11 April 2 9, 1907. v The cutter-head A is mounted on a frame or spider C, having a front plate C, a rear plate C and bars C connecting the plates i), C rigidly with each other. The front plate C is provided with a forwardly-extending centrally-arranged screw rod G 'on which screws the hub D of an initial cutterD, havin a plurality of radially disposed cutting blades D curved forwardly and inwardly, to bring the forward ends of the cutting blades to a common point, as will be readily understood by reference to the drawings. The rear plate is provided with rearwardly-extendiiig lugs C engaged by a pivot pin E also assing through the member of a universal joint having a pivot pin extending, through the said member E and through lugs ll formed on the forward end of a motor 'or turbine wheel l mounted to notches being arranged in s iral form.

Patented Aug. 24, 1909.

K and K arranged longitudinally and extending with their rear ends in elongated slots (l formed in the rear lateC of the frame or s i der C, as plain indicated in Figs. 3 ans. On the spinc les K, K and K are mounted torotate loosely conicalshaped cutters L, L, U, extending between the plates 0 and C with their a extends for ward, and having lengthwise-r isposed cutting edges L notched transversely in such a manner that the notches L follow a spiral line, as plainly indicated in Figs. 1 and '2. B the arrangement described eachcutting e ge L bf a cutter L, L or L is divided by the notches into teeth, the teeth of successive cutting edges L breaking joint, owing to the The pitch of the cutting edges 3 for the several cutters L, L, L is different, as plainly indicated in Fig. 3, to provide different teeth along the cutting edges of the several cutters, with a view to insure thorough cleaning of the flue when the device is in use, it being understood that successive teeth on each cutter and successive teeth on adjacent cutters act on different parts of the tube, to insure thorough'cleaning thereof. The free or rear ends of the spindlesK, K, K are ressed outward by the action. of a spring N, t e outward movenientbeing limited by the end wall of each of the slots C in the plate C to prevent the cutters from cutting into the.

tube. The spindles are normally held in an outermost position by the segmental spring N, fitting into notches K formed on the rear terminals of the spindles arran ement-described the spindles l K, K and their cutters L, L and L are free to yield inwardly against the tension of the spring N, thus protecting the cutters L, L, L against undue and quick abrasion when striking extremely hard matter which has to be cut out gradually. It will also be no.- ticed that by the use of the spring, the cutters yield and hence are not liable to stick in ,fiauiztws of 6611!. 2J farm 11d P1 'lgthwisa arranged m 92 notched" @1163 sf .416 Said cutters being; 1

cutie-r5 0. conicaEfmzm; zzmf. H0, d Wifih imagthww ail-ranged az'aattzlg ad; of di -far gut pinch matched tmns'versely n a, spire E in." the apex; ends 012525.16 s 1;" 1L, L42 m 5w tube By the an'ang'inent descrfbsd the be or flue to 'HJHiC-VBS the male "Jzhe'rw 30211, the aming edges of the blades cut into the mat mi 1 located may the centm' of the tuba or flue, and than tbs amming edges L of tha cutters L, L and If acme gradually" in contact ith the matter Beam; &9 and he inner suz'face ai' tbetube'or flu-e 60 be ed, 80 as to graduelly'and thcroughiy the sxtmneous matte; f the tube. is 'cmderstemi tim; mugh the turbine 23 res; H washes the terial cut loose in a, forward direc'sion, 80 as to mmble the, cutters D L L, and L to 'properlg: cat at all timss -mmbst'mctecl by $11? previously TemqV-ad scale or 061 six? r head A. when re /'01 e Water passing.

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it mid bmob erved flan? mapectwn 0f :3, tmw'tim casing G is; givi'm'ifLEd "min a groove G", whamin is raceived a projection or m ths bail Q 01 the wupljng. cmmecn its a censid 1 .1 of the owing Wih respect to the aennectwu Elwi; Emmi/rains the casing zm fi wnnecfiion is describ-d invantian, I claim a new and desiit'a to sacum by l awnb:

, 1. i: miier ms, 9 mm): i1 162 ate-misting 0f me miiw 01": iengitudimliy axgendifi bransvez's y dong a, s, the apex grward and i'mted 5116 frame, and spiiiiw's supporting the. rear and and ezmitfing' Lam be'yield inwardly 2. 1'1. 0053a? flue clemmr baa-"i115; a zotaiabia cutter head consisiving 01 frameand. &@ piik mliay of lOllf iilfldifilfiliff exue-fiding re gafiabie "nutter head cgmprising a with the rear endsnf tnqsaid spindles.

'suppwrtil g the tem ends and permltfimg them to yield inwardly v miiby 0f longitudingmliy arranged having $1 1091}? forward ends .plvotedtp the imsely 11 the said spindles and having the av an: ands forward, the said cutters being :zmtched transverse 01353; Spiral line and. springs suppnrtmg (2 1e rear ends of the pmdles and permitting them. to move mwardl A 0051a: flue cleaner having & revolub e fmme an initial swbmr'fixed on the forward end of the paid 5 mm and having radial} cum-111g bla dgs frame, canical cutters. 'mmsnted to mum aurved forwardly and inwardly to a, common 65 fmnt meeting; point, longitudinal 5 5116188 dammed than? fmwmd. ends on't said frame and bzwmg than rear ends extenmgg in mafia sieis in the said frame, conical cut- 3m mmmtafi 0 rotate loosely on the v saljtl" spindles, s; sprinv remo'vabiy connegted 5. Abofler fif'ue cleaner 'providedwifihj' rgmfiuble cu tar having lbngitudinallyq tendin Gui-ting edges notched transversely.

Fina.

er flue cleaner rovide with a 1 having 21;) umity of longie: iing seminal cutts'rs having c'u'tting edges of mutt-e1. ing

mashed tl-azesverselyuldngp spinal-line.

*1, A Miler flue ckaner providedwith a.

ravaiuble cutter mmmtad forjswinging movemem; st its fmward and and spring supported .9 its raw. end,;said cutter havingiungitudi- :& My extending eiuttinw edges notched lanm vslz salyalpng & spgml e. V in testunony whergof ljlavegslgned my mama '00 2111s specxilcatlon m. the presence of iwo slpnscnbmg 'wltngsaea, JOHN W IEOHMANN.

W'iinsasses: v

502m MQLHNTY, 

